Abstract
We study bulk and edge correlations in the compressible half-filled state, using a modified version of the plasma analogy. The corresponding plasma has anomalously weak screening properties, and as a consequence we find that the correlations along the edge do not decay algebraically as in the Laughlin (incompressible) case, while the bulk correlations decay in the same way. The results suggest that due to the strong coupling between charged modes on the edge and the neutral fermions in the bulk, reflected by the weak screening in the plasma analogue, the (attractive) correlation hole is not well defined on the edge. Hence, the system there can be modeled as a free Fermi gas of electrons. We finally comment on a possible scenario, in which the Laughlin-like dynamical edge correlations may nevertheless be realized.
Original language | English |
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Pages (from-to) | 72-74 |
Number of pages | 3 |
Journal | Physica E: Low-Dimensional Systems and Nanostructures |
Volume | 6 |
Issue number | 1 |
DOIs | |
State | Published - Feb 2000 |
Externally published | Yes |
Event | 13th International Conference on the Electronic Properties of Two-Dimensional Systems (EP2DS-13) - Ottawa, Ont, Can Duration: 1 Aug 1999 → 6 Aug 1999 |
Bibliographical note
Funding Information:We acknowledge useful discussions with A. Auerbach, J. Feinberg, V. Goldman J.H. Han, A. MacDonald, R. Rajaraman, S. Sondhi, A. Stern and X.-G. Wen, and especially with N. Read. This work was partly supported by the United States–Israel Binational Science Foundation (BSF), and the Israeli Academy of Sciences (M.V.M.).
Funding
We acknowledge useful discussions with A. Auerbach, J. Feinberg, V. Goldman J.H. Han, A. MacDonald, R. Rajaraman, S. Sondhi, A. Stern and X.-G. Wen, and especially with N. Read. This work was partly supported by the United States–Israel Binational Science Foundation (BSF), and the Israeli Academy of Sciences (M.V.M.).
Funders | Funder number |
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Israeli Academy of Sciences | |
Bloom's Syndrome Foundation | |
United States-Israel Binational Science Foundation |